Micronutrients & recovery
Estimating body fat percentage from skinfold thickness requires using the logarithm of the skinfold measurements to achieve a linear relationship with body density, as the raw relationship is non-linear.
If you are using skinfold calipers to estimate body fat, do not simply add the millimeter readings and plug them into a standard linear formula. You must use the specific regression equations provided by Durnin and Womersley that utilize the logarithm of the skinfold sum. Using raw numbers will lead to inaccurate results, especially for individuals with higher body fat percentages.
When the results were plotted it was found necessary to use the logarithm of skinfold measurements in order to achieve a linear relationship with body density.
Why this rating
Based on a large sample size (481 subjects) and rigorous statistical validation (regression analysis) across multiple age and sex groups.
Source
Body fat assessed from total body density and its estimation from skinfold thickness: measurements on 481 men and women aged from 16 to 72 Years
J. V. G. A. Durnin et al. · British Journal Of Nutrition · 1974
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